Fa b/dev

[Fa-b]

fix color option for paintPolygon & paint Polyline
add default color to pad and fix test accordingly
add tests for rgb image to pad
fix missing position data after cropping binary image
adjust image position to negative direction after padding

No additional test are failing by these changes, so my guess is that the position information is not really needed internally?
My thought was to keep the positions after a transformation relative to the parent, which helps when drawing them atop each other.
Obviously negative positions as for after a padding transformation seems strange. But is it wrong?

[codecov]

Codecov Report

Base: 84.43% // Head: 84.55% // Increases project coverage by +0.12% 🎉

Coverage data is based on head (a0ddf46) compared to base (e3ba8d4).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           legacy     #614      +/-   ##
==========================================
+ Coverage   84.43%   84.55%   +0.12%     
==========================================
  Files         163      163              
  Lines        5697     5735      +38     
  Branches     1424     1448      +24     
==========================================
+ Hits         4810     4849      +39     
+ Misses        790      789       -1     
  Partials       97       97              

Impacted Files	Coverage Δ
src/image/transform/crop.js	100.00% <ø> (ø)
src/image/Image.js	94.50% <100.00%> (+0.18%)	⬆️
src/image/internal/copy.js	100.00% <100.00%> (ø)
src/image/operator/paintPolygon.js	100.00% <100.00%> (ø)
src/image/operator/paintPolyline.js	100.00% <100.00%> (ø)
src/image/transform/pad.js	100.00% <100.00%> (+2.56%)	⬆️

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